in reply to No experience required...

If your're going to be porting from korn shell, you'll need
the O'Reilly book Learning the Korn Shell. It claims to
be a nutshell handbook, but it'll have everything you need
to understand the old scripts. Ksh scripscan get a little
obscure if you're not familiar with them, and online resources
for ksh scripting are not nearly as good as the ones for Perl.